Results 31 to 40 of about 1,204,501 (150)

Outcome of monochorionic diamniotic twin pregnancy with selective fetal growth restriction and continuous or intermittent absent or reversed end‐diastolic umbilical artery flow: international multicenter cohort study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 1, Page 41-50, July 2025.
ABSTRACT Objectives Monochorionic diamniotic (MCDA) twins with selective fetal growth restriction (sFGR) and either continuous (cAREDF) or intermittent (iAREDF) absent or reversed end‐diastolic flow in the umbilical artery face significant fetal and neonatal risks.
A. T. R. Noll   +19 more
wiley   +1 more source

一种缓释型抗菌双层中空纤维膜及其制备方法

open access: yes, 2016
本发明公开了一种缓释型抗菌双层中空纤维膜及其制备方法。所述的抗菌双层中空纤维膜包括含有负载金属银分子筛的外层和多孔内层。所述外层由聚合物和负载金属银分子筛的混合物组成,内层由具有机械支撑作用的多孔聚合物组成。使用本发明方法制备的双层中空纤维膜具有银离子缓释的性能,能保持持久的抗菌效果 ...
薛立新, 石虎砚
core  

Some Insects Are More Equal Than Others: A Comparison of Popular Large Language Model Chatbots' Treatment of Different Insect Groups 昆虫间的不平等——主流大语言模型 (LLM) 对不同昆虫评价的比较研究

open access: yesIntegrative Conservation, Volume 4, Issue 2, Page 254-267, June 2025.
Our research demonstrates that in mirroring prevailing human biases towards different insect groups, LLM chatbots oversimplify insect diversity by predominantly restricting “bees” to honeybees and “wasps” to yellowjackets, neglecting the majority of biodiversity that includes wild bees and parasitoid wasps, while also favouring Nearctic species in ...
Marina Moser   +2 more
wiley   +1 more source

一种双层膜药物控释微胶囊及其制备方法

open access: yes, 2002
一种双层膜药物控释微胶囊是双层膜结构的海藻酸钠/壳聚糖微胶囊。该微胶囊的制备方法是经二次成膜反应制备而成双层膜结构的海藻酸钠/壳聚胶囊。该微胶囊以具有良好生物相容性、可降解性和成膜特性的天然高分子海藻酸钠和壳聚糖为主要材料,自然界中含量丰富,成本低,适合于规模化生产 ...
刘群, 马小军
core  

Comparison of the in vitro antibiofilm activities of otic cleansers against canine otitis externa pathogens

open access: yesVeterinary Dermatology, Volume 36, Issue 2, Page 148-158, April 2025.
Background – Biofilm production by canine otitis externa (COE) pathogens and resistance development to multiple antimicrobials are commonly reported problems in veterinary practice. The use of adjuvants to disrupt biofilms may be a viable adjunctive therapy.
Bhumika F. Savaliya   +3 more
wiley   +1 more source

一种双金属-陶瓷复合薄膜及其制备方法

open access: yes, 2016
本发明公开了一种双金属-陶瓷复合薄膜,由双金属粒子和陶瓷相组成,双金属粒子嵌入到陶瓷相中,形成双金属-陶瓷复合层;所述的双金属粒子为WAl或WTi,其中,基体元素为W,掺杂元素为Al或Ti;所述的陶瓷相为氧化铝或二氧化硅;本发明还公开了该双金属合金陶瓷薄膜的制备方法,通过多靶磁控共溅射的技术来实施,其制备工艺简单,所获得的双金属陶瓷薄膜在紫外、可见光和近红外区域具有强的太阳光谱吸收特性,并具备优异的热稳定性,适用于温度高于550 ...
高俊华, 曹鸿涛, 王小雨
core  

双氯芬酸钠栓与硬膜外镇痛泵在剖宫产术后的镇痛效果观察

open access: yesHuli yanjiu, 2008
摘要: (免费在线浏览)摘要:[目的]探讨双氯芬酸钠栓与硬膜外镇痛泵在剖宫产术后的镇痛效果。[方法]抽取2004年8月―2007年4月剖宫产产妇184 例,随机分为观察组和对照组,各92 例,术后分别给予双氯芬酸钠栓与硬膜外镇痛泵镇痛,观察两组镇痛效果。[结果]剖宫产术后使用双氯芬酸钠栓镇痛效果与硬膜外镇痛泵镇痛效果相当。[结论]双氯芬酸钠栓镇痛操作简便、安全、吸收快、无副反应、经济,产妇容易接受。
林秀玲, 罗琳虹
doaj  

Impact of deep or ovarian endometriosis on pelvic pain and quality of life: prospective cross‐sectional ultrasound study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 3, Page 372-383, March 2025.
ABSTRACT Objective To assess whether premenopausal women diagnosed with deep or ovarian endometriosis on transvaginal sonography (TVS) were more likely to suffer from dyspareunia and pelvic pain symptoms, and have a lower quality of life, compared to women without sonographically diagnosed deep or ovarian endometriosis.
P. Chaggar   +5 more
wiley   +1 more source

一种不对称双相复合透氧膜的制备方法

open access: yes, 2009
本发明提供了一种不对称双相复合透氧膜的制备方法,具体过程如下:将氧离子导体和氧离子-电子混合导体组成的双相复合透氧膜片打磨平整,超声清洗,烘干,保护透氧膜片一面,另一面裸露放到1.0~50%酸性溶液中浸渍,浸渍温度为10~80℃,浸渍10~360小时,形成不对称双相复合透氧膜。本发明制备出的不对称双相复合透氧膜的多孔载体具有高的空隙率和集中的孔径分布,并且多孔载体层和透氧膜层能够很好的融合在一起而不发生分离。不对称双相复合透氧膜具有高的氧渗透性,并且在还原气氛下具有的高的化学稳定性及高的结构稳定性 ...
杨维慎, 朱雪峰, 李其明, 丛 铀
core  

一种通过双官能团单体原位聚合调控聚乳酸膜微孔结构的方法

open access: yes, 2015
本发明公布了一种通过原位聚合的方法调控聚乳酸多孔膜微孔结构的方法。本发明方法首先将聚乳酸溶解在有机溶剂中,充分溶解后制成成膜前驱体溶液,在氮气保护下将双官能团单体和引发剂加入成膜前驱体溶液中进行原位聚合,反应结束后静置脱泡得到铸膜液。将铸膜液浇注到玻璃板上,得到初生膜,随后立即转移到去离子水浴中,浸没一定时间后得到成型的聚乳酸膜。通过控制原位聚合的时间可以实现聚乳酸膜支撑层结构逐渐由指状大孔结构向完全的互穿网络结构转变,具有高通量、高效选择性透过和较好的亲水性,适合作为血液透析膜 ...
朱丽静   +3 more
core  

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